Finding the Fourth Proportional to 315.48, 473.55 and 132.99
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Solution
The fourth proportional to 315.48, 473.55 and 132.99 is: 199.62
Step by Step Solution
- Step 1: Write the proportion equation
315.48 : 473.55 = 132.99 : x - Step 2: Convert to fraction form
315.48/473.55 = 132.99/x - Step 3: Cross multiply
315.48x = 473.55 × 132.99 - Step 4: Simplify right side
315.48x = 62,977.41 - Step 5: Solve for x
x = 62,977.41/315.48 - Step 6: Final answer
x = 199.62
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.